Influence of Al3+doping on the energy levels and thermal property of the 3.5MgO·0.5MgF2·GeO2:Mn4+ red-emitting phosphor |
The PL spectra of the 3.5MgO· 0.5MgF2· (1−2 x )GeO2· x Al2O3:0.01Mn4+ phosphors with Al2O3 concentrations of x = 0, 0.05, 0.1, and 0.15 mol. |